CN206055884U - A kind of central air-conditioning circulates the preferred control device of pump group - Google Patents
A kind of central air-conditioning circulates the preferred control device of pump group Download PDFInfo
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- CN206055884U CN206055884U CN201620970415.6U CN201620970415U CN206055884U CN 206055884 U CN206055884 U CN 206055884U CN 201620970415 U CN201620970415 U CN 201620970415U CN 206055884 U CN206055884 U CN 206055884U
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Abstract
This utility model is related to water cooled central air conditioner pump energy saving control device, it is desirable to provide a kind of central air-conditioning circulates the preferred control device of pump group.This kind of central air-conditioning circulates the preferred control device of pump group includes the preferred controller of pump group, temperature sensor, pressure transducer, cold and heat quantity intelligent long-range detector, water pump adaptive throttling instrument.This utility model has good energy-saving effect, and the multiple stage water pump for overcoming traditional method presence is run or defect that several water pumps are run at high frequencies at low frequencies.
Description
Technical field
This utility model is with regard to water cooled central air conditioner pump energy saving control device field, more particularly to a kind of central air-conditioning
The preferred control device of circulation pump group.
Background technology
At present, with expanding economy, central air-conditioning is more and more extensive in the application of every profession and trade, but refrigerating water pump, cooling
A big chunk that pump, blower fan of cooling tower energy consumption are accounted in central air-conditioning entirety energy consumption, makes the operation cost of every profession and trade remain high,
Refrigerating water pump, cooling pump, the energy-conservation of blower fan of cooling tower have great significance.
With the improvement of people's living standards, central air conditioner system is used in increasing building, and its dress
Large Central Air Conditioning System system of the machine capacity from several kilowatts of minitype domestic central air condition to several megawatts has.In air-conditioning row
While industry is more and more prosperous, the power saving of air conditioning system becomes primarily asking for the sustainable development needs solution of air conditioner industry
Topic.Variable water volume system therein is in power-saving technology in occupation of important position.At present in some Air-conditioning Engineerings, designer
Valve regulated method and pump variable frequency technology that member is adopted when design is selected, these technologies have obtained wider application.Simultaneously
A kind of new variable water volume system-preferred controller of central air-conditioning circulation pump group and control method are just in central air conditioner system
More and more a wide range of application is obtained in engineering.The water pump of air conditioner operational mode of conventional central air conditioning system：
First, valve throttle method
Which is simple, small investment, but needs experienced professional or automaton to carry out operational control valve
Aperture；And the principle of which is realized by reducing valve opening resistance, the energy of water pump output is consumed,
It is that one kind damages regulation, does not save the energy expenditure of water pump.
2nd, single frequency variation method
During actual motion, the almost specified power frequency of operating frequency when opening single pump or two pumps, such frequency conversion
The efficiency of device is very low, wastes very big.And for parallel-connected pumps group, in addition it is also necessary to consider the total load delivery effect of its whole parallel pumps
Rate and efficiency-cost ratio.
Utility model content
Main purpose of the present utility model is to overcome deficiency of the prior art, there is provided a kind of central air-conditioning circulates pump group
It is preferred that controller.To solve above-mentioned technical problem, solution of the present utility model is：
There is provided a kind of central air-conditioning circulation pump group preferred control device, central air-conditioning includes handpiece Water Chilling Units, chilled water pump, cold
But water pump, cooling tower, water collector, water knockout drum, are provided with freezing water main, freezing return main, cool down water main, cool back
Supply mains, the central air-conditioning circulates the preferred control device of pump group includes the preferred controller of pump group, temperature sensor, pressure sensing
Device, cold and heat quantity intelligent long-range detector, water pump adaptive throttling instrument；
Signal picker is embedded with the preferred controller of the pump group, for gathering signal and output control signal；
The temperature sensor is separately mounted to freeze water main, freezing return main, cools down water main, cools back
On supply mains, and temperature sensor is connected respectively to the signal picker input in the preferred controller of pump group, for freezing
Supply and return water temperature signal, cooling supply and return water temperature signal are sent to signal picker in real time；
The pressure transducer is separately mounted to freeze water main, freezes on return main, for freezing is supplied backwater
Pressure signal is sent to the preferred controller of pump group in real time；
The cold and heat quantity intelligent long-range detector is arranged on freezing return main, for flow, cold and hot amount are passed in real time
It is sent to the preferred controller of pump group；
The water pump adaptive throttling instrument is arranged on water pump side, preferably controls for water pump frequency is sent to pump group in real time
Device.
In this utility model, the freezing water main is multiple stage parallel connection chilled water pump outlet pipe between water knockout drum
Pipeline；Freezing return main refers to that water collector freezes the pipeline between water inlet pipe to handpiece Water Chilling Units；Cooling water main refers to cold
Water dispenser group cooling water outlet pipe is to the pipeline between cooling tower water inlet pipe；Cooling backwater house steward refers to cooling tower outlet pipe to cooling-water machine
Pipeline before group cooling water inlet pipe.
In this utility model, the preferred controller of the pump group adopts CBS-D570 controllers.
In this utility model, the cold and heat quantity intelligent long-range detector adopts KHEN-250-15-G3M-011-10010.
In this utility model, the water pump adaptive throttling instrument adopts ACS510-X1-060A-4.
In this utility model, the temperature sensor adopts QAE2120.015.
In this utility model, the pressure transducer adopts QEE2010.14.
Control method of the present utility model：Current actual load is gone out according to the flow that gathered and differential thermal calculation, and with
The technical parameter and load efficiency characteristics of the various water pump of historical record is foundation, and the water pump set up by fuzzy inference rule is excellent
Selected control simulation, selects a kind of optimal operation water pump selection, it is determined that the water pump number of units for needing to put into operation, concrete pump group and its
Operating frequency, it is ensured that water system parallel pumps have highest load delivery efficiency and efficiency-cost ratio；
Control targe is up to water pump efficiency, according to the change of institute's feed flow, the concrete composition of pump group and its
Efficiency characteristic, by contrasting various pump group combining forms and running frequency operating mode recorded in the preferred controller of pump group, obtains
The operation water pump number of units optimal in the case where flow and lift is met and its running frequency, make the total power consumption consumed by pump group minimum, real
Existing pump group maximum energy-saving；
Specifically include following step：
(1) data acquisition：By the quantity for changing operation water pump, using the cold and hot amount intelligence on freezing return main
Pressure transducer on energy long-range detector and freezing water main is adopted to house steward's flow, manifold pressure and water pump general power
Collection, and the data Cun Chudao data base of collection is made into basis for next step data processing；
(2) data processing：The data that step (1) is gathered are taken out from data base, every kind of water pump is calculated according to below equation
Pump group coefficient at different frequencies and efficiency are combined, data base is recorded again：
Pump power computing formula：P=QH ρ/102 η=9.8QH/ η formula 1
Pipeline and flow curve formula：H=KQ2Formula 2
Flow and head curve formula：H=A0+A1Q+A2Q2Formula 3
Wherein, P refers to water pump general power, and unit is KW；Q refers to water-main flow, and unit is M3/H；H refers to lift, single
Position is m；ρ refers to water density, is worth for 1000kg/M3；η refers to pump efficiency；K refers to water-main pipeline coefficient；A0Refer to pump group zero
Ordered coefficients；A1Pump group coefficient of first order is referred to, by statistical computation, the coefficient of first order A of water pump1=0；A2Refer to pump group quadratic coefficients；
According to above formula as can be seen that pump efficiency η is the quadratic equation relevant with flow Q, can count in system operation
Various pump group combinations and pump efficiency η under frequency are calculated, and recorded data base.
(3) logical judgment and output control amount：The data gathered according to step (1) and the result of calculation of step (2), and
In current water system running, pipeline coefficient whether there is, and current pipeline coefficient can be calculated by above-mentioned formula, pressed
Following two situations carry out logical judgment：
If 1. pipeline coefficient is present, finds from the pipeline coefficient query context for having recorded and most connect with current pipeline coefficient
Near pipeline coefficient value；Then under the pipeline coefficient, each flow for finding from the flow query context for having recorded and each
The corresponding efficiency value of flow, finds out the corresponding optimum number of units of maximal efficiency and running frequency, exports the operation water pump optimum number of units
And running frequency；
If 2. pipeline coefficient is not present, calculated according to the pipeline coefficient and each water pump pump group coefficient at different frequencies
Flow out and efficiency, are inserted directly into data base, then according to the 1. plant situation continued find out operation water pump optimal amount and
Running frequency；
(4) operation water pump optimal amount and running frequency are sent into water pump adaptive throttling instrument, by water pump adaptive session
Stream instrument automatically adjusts to water pump control so as to which flow meets current end load.
Compared with prior art, the beneficial effects of the utility model are：
This utility model has good energy-saving effect, overcomes the multiple stage water pump of traditional method presence in low frequency
The defect that operation or several water pumps are run at high frequencies under rate.
Description of the drawings
Fig. 1 is air-conditioning primary pump variable flow water pump group operating condition.
Fig. 2 is primary pump variable flow pump group system diagram.
Reference in figure is：1 temperature sensor；2 pressure transducers；3 cold and heat quantity intelligent long-range detectors；4 pump groups
It is preferred that controller；5 chilled water pumps；6 cooling water pumps；7 handpiece Water Chilling Units；8 cooling towers；9 water collectors；10 water knockout drums.
Specific embodiment
This utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
The preferred controller of a kind of central air-conditioning circulation pump group as shown in Figure 2, including preferred controller 4, the temperature biography of pump group
Sensor 1, pressure transducer 2, cold and heat quantity intelligent long-range detector 3, water pump adaptive throttling instrument switch board.
Central air-conditioning includes handpiece Water Chilling Units 7, chilled water pump 5, cooling water pump 6, cooling tower 8, water collector 9, water knockout drum 10, if
There are freezing water main, freezing return main, cooling water main, cooling backwater house steward.Freezing water main refers to that multiple stage is in parallel
5 outlet pipe of chilled water pump is to the pipeline between water knockout drum 10；Freezing return main refer to water collector 9 to handpiece Water Chilling Units 7 freeze into
Pipeline between water pipe；Cooling water main refers to 7 cooling water outlet pipe of handpiece Water Chilling Units to the pipeline between 8 water inlet pipe of cooling tower；
Cooling backwater house steward refers to that 8 outlet pipe of cooling tower cools down the pipeline before water inlet pipe to handpiece Water Chilling Units 7.
The temperature sensor 1 is arranged on freezing water main, freezing return main, cooling by 1/2G plumb joints respectively
Water main, cooling backwater house steward, are threadably secured connection, and its outfan and pump between temperature sensor 1 and plumb joint
The input of the preferred controller of group 4 is connected, the temperature sensor 1 be used for will freezing supply and return water temperature signal, cooling for backwater temperature
Degree signal is sent to pump group optimal controller in real time；In the present embodiment, temperature sensor 1 is passed using QAE2120.015 temperature
Sensor, and temperature sensor 1 wears galvanized pipe φ 25 and manage, the preferred controller of laying shielded cable RVVP2 × 1.0 to pump group 4.
The pressure transducer 2 is separately mounted to freeze water main, freezing return main, for freezing is supplied backwater pressure
Force signal is sent to pump group optimal controller in real time.In the present embodiment, pressure transducer 2 adopts QEE2010.14, and pressure
Sensor 2 is worn galvanized pipe φ 25 and is managed, the preferred controller of laying shielded cable RVVP2 × 1.0 to pump group 4.
The cold and heat quantity intelligent long-range detector 3 is arranged on freezing return main, is that flange is installed, and is connected to pump group
It is preferred that the input of controller 4, for flow, cold and hot amount are sent to the preferred controller of pump group 4 in real time.In the present embodiment,
Cold and heat quantity intelligent long-range detector 3 adopts KHEN-250-15-G3M-011-10010 cold and hot amount detectors, and cold and heat quantity intelligent is remote
Journey detector 3 individually wears galvanized pipe φ 25, and lays the preferred controller of connection RVVSP2 × 1.0 to pump group 4.
The water pump adaptive throttling instrument switch board is arranged on water pump side, excellent for water pump frequency is sent to pump group in real time
Change controller.In the present embodiment, water pump adaptive throttling instrument adopts ACS510-X1-060A-4, and water pump adaptive throttling instrument
4 individually wear two φ 25 of galvanized pipe, and lay connection RVVP4 × 1.0 and the preferred controller of RVV6 × 1.0 to pump group 4.
The preferred controller 4 of the pump group is arranged in control chamber, for gathering signal and output control signal.In this enforcement
In example, the preferred controller 4 of pump group adopts CBS-D570 controllers.
Water pump of air conditioner variable-flow pump group belongs to primary pump variable flow system, uses most precisely effectively, and most energy-conservation
Number of units control method realizing vari- able flow control, according to system composition form with need to make system total Water 0%-
Change between 100%.The output flow of water pump group be by changing the water pump number of units and water pump frequency of parallel running realizing, from
And the realization for the multistage flow output of water pump group provides possibility.Fig. 1 is some operating modes of the water pump group operation of 4 water pump compositions
Figure (combination has many kinds).
Air-conditioning primary pump variable flow pump group is also preferably controlled including temperature flow sensor, pump group in addition to water pump group
4 grade equipment of device is constituted.By using the identical temperature difference, same traffic, transporting cold (heat) load of identical, parallel pumps can put into
1～N platforms water pump simultaneously runs to complete under corresponding frequency.In N number of combined running scheme, the total load of parallel pumps
Delivery efficiency and efficiency-cost ratio are all not quite similar, but must wherein have that load delivery efficiency is optimal, the operation of efficiency-cost ratio highest
Scheme.
And the control strategy that the preferred controller of pump group is circulated based on central air-conditioning for providing be according to the flow for being gathered with
Differential thermal calculation goes out current actual load, and with the technical parameter and load efficiency characteristics of the various water pump of historical record be according to
According to the preferred Controlling model of water pump set up by fuzzy inference rule selects a kind of optimal operation water pump selection, it is determined that needing
Water pump number of units, concrete pump group and its operating frequency for putting into operation, it is ensured that there is water system parallel pumps highest load to deliver
Efficiency and efficiency-cost ratio.With the minimum target of conveying energy consumption, according to the change of institute's feed flow, the concrete composition of pump group and its efficiency
Characteristic, by the water pump preferred disposition model set up in the preferred controller of pump group 4, obtains optimal in the case where flow and lift is met
Operation water pump number of units and its running frequency, make the total power consumption consumed by pump group minimum, realize pump group maximum energy-saving.Specifically include
Following step：
(1) data acquisition：By the quantity for changing operation water pump, using the cold and hot amount intelligence on freezing return main
Pressure transducer 2 on energy long-range detector 3 and freezing water main is carried out to house steward's flow, manifold pressure and water pump general power
Collection, and the data Cun Chudao data base of collection is made into basis for next step data processing；
(2) data processing：The data that step (1) is gathered are taken out from data base, every kind of water pump is calculated according to below equation
Pump group coefficient at different frequencies and efficiency are combined, data base is recorded again：
Pump power computing formula：P=QH ρ/102 η=9.8QH/ η formula 1
Pipeline and flow curve formula：H=KQ2Formula 2
Flow and head curve formula：H=A0+A1Q+A2Q2Formula 3
Wherein, P refers to water pump general power, and unit is KW；Q refers to water-main flow, and unit is M3/H；H refers to lift, single
Position is m；ρ refers to water density, is worth for 1000kg/M3；η refers to pump efficiency；K refers to water-main pipeline coefficient；A0Refer to pump group zero
Ordered coefficients；A1Pump group coefficient of first order is referred to, by statistical computation, the coefficient of first order A of pump1=0；A2Refer to pump group quadratic coefficients；Root
According to above formula as can be seen that pump efficiency η is the quadratic equation relevant with flow Q, can calculate in system operation
Pump efficiency η under going out various pump group combinations and frequency, and recorded data base.
(3) logical judgment and output control amount：The data gathered according to step (1) and the result of calculation of step (2), and
In current water system running, pipeline coefficient whether there is, and current pipeline coefficient can be calculated by above-mentioned formula, pressed
Following two situations carry out logical judgment：
If 1. pipeline coefficient is present, finds from the pipeline coefficient query context for having recorded and most connect with current pipeline coefficient
Near pipeline coefficient value；Then under the pipeline coefficient, each flow for finding from the flow query context for having recorded and
The corresponding efficiency value of each flow, finds out the corresponding optimum number of units of maximal efficiency and running frequency, exports operation water pump optimum platform
Number and running frequency；
If 2. pipeline coefficient is not present, calculated according to the pipeline coefficient and each water pump pump group coefficient at different frequencies
Flow out and efficiency, are inserted directly into data base, then according to the 1. plant situation continued find out operation water pump optimal amount and
Running frequency；
(4) operation water pump optimal amount and running frequency are sent into water pump adaptive throttling instrument, by water pump adaptive session
Stream instrument automatically adjusts to water pump control so as to which flow meets current end load.
In specific work process, ancillary equipment cable laying is good, and terminal line is connected, water pump adaptive throttling switch board
4 power supplys are had friendly relations, and preferred 4 power supply of controller of pump group is had friendly relations, and on the preferred controller of pump group 4 put start button, the controller just from
The number of units of the automatically controlled water pumps such as dynamic gathered data, digital processing and the frequency of frequency conversion, realize pump group maximum energy-saving.
Finally it should be noted that listed above is only specific embodiment of the utility model.Obviously, this practicality is new
Type is not limited to above example, can also have many variations.One of ordinary skill in the art can be from disclosed in this utility model
The all deformations directly derived in content or associate, are considered as protection domain of the present utility model.
Claims (7)
1. a kind of central air-conditioning circulates the preferred control device of pump group, and central air-conditioning includes handpiece Water Chilling Units, chilled water pump, cooling water
Pump, cooling tower, water collector, water knockout drum, are provided with freezing water main, freezing return main, cooling water main, cooling backwater total
Pipe, it is characterised in that the preferred control device of central air-conditioning circulation pump group include the preferred controller of pump group, temperature sensor,
Pressure transducer, cold and heat quantity intelligent long-range detector, water pump adaptive throttling instrument；
Signal picker is embedded with the preferred controller of the pump group, for gathering signal and output control signal；
It is total that the temperature sensor is separately mounted to freeze water main, freezing return main, cooling water main, cooling backwater
Guan Shang, and temperature sensor is connected respectively to the signal picker input in the preferred controller of pump group, for freezing is supplied back
Coolant-temperature gage signal, cooling supply and return water temperature signal are sent to signal picker in real time；
The pressure transducer is separately mounted to freeze water main, freezes on return main, for freezing is supplied pressure of return water
Signal is sent to the preferred controller of pump group in real time；
The cold and heat quantity intelligent long-range detector is arranged on freezing return main, for flow, cold and hot amount are sent in real time
The preferred controller of pump group；
The water pump adaptive throttling instrument is arranged on water pump side, for water pump frequency is sent to pump group preferred controller in real time.
2. a kind of central air-conditioning according to claim 1 circulates the preferred control device of pump group, it is characterised in that the freezing
Water main is multiple stage parallel connection chilled water pump outlet pipe to the pipeline between water knockout drum；Freezing return main refers to water collector to cold
Pipeline between water dispenser group freezing water inlet pipe；Cooling water main refer to handpiece Water Chilling Units cooling water outlet pipe to cooling tower water inlet pipe it
Between pipeline；Cooling backwater house steward refers to that cooling tower outlet pipe cools down the pipeline before water inlet pipe to handpiece Water Chilling Units.
3. a kind of central air-conditioning according to claim 1 circulates the preferred control device of pump group, it is characterised in that the pump group
It is preferred that controller adopts CBS-D570 controllers.
4. a kind of central air-conditioning according to claim 1 circulates the preferred control device of pump group, it is characterised in that described cold and hot
Amount intelligent remote detector adopts KHEN-250-15-G3M-011-10010.
5. a kind of central air-conditioning according to claim 1 circulates the preferred control device of pump group, it is characterised in that the water pump
Adaptive throttling instrument adopts ACS510-X1-060A-4.
6. a kind of central air-conditioning according to claim 1 circulates the preferred control device of pump group, it is characterised in that the temperature
Sensor adopts QAE2120.015.
7. a kind of central air-conditioning according to claim 1 circulates the preferred control device of pump group, it is characterised in that the pressure
Sensor adopts QEE2010.14.
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| CN201620970415.6U CN206055884U (en) | 2016-08-28 | 2016-08-28 | A kind of central air-conditioning circulates the preferred control device of pump group |
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| CN201620970415.6U CN206055884U (en) | 2016-08-28 | 2016-08-28 | A kind of central air-conditioning circulates the preferred control device of pump group |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843036A (en) * | 2017-09-21 | 2018-03-27 | 江苏中澜威远控制工程有限公司 | The control method and equipment that a kind of freezing unit based on big data management most saves |
| CN113719442A (en) * | 2021-09-14 | 2021-11-30 | 上海凯泉泵业（集团）有限公司 | High-efficient pump package system |
-
2016
- 2016-08-28 CN CN201620970415.6U patent/CN206055884U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843036A (en) * | 2017-09-21 | 2018-03-27 | 江苏中澜威远控制工程有限公司 | The control method and equipment that a kind of freezing unit based on big data management most saves |
| CN113719442A (en) * | 2021-09-14 | 2021-11-30 | 上海凯泉泵业（集团）有限公司 | High-efficient pump package system |
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